30981249

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{20369}}^1$

素因数の和:20401

約数の個数: 18

約数和(自身を含む): 48460230

約数和(自身を除く): 17478981

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 20369, 61107, 183321, 264797, 794391, 2383173, 3442361, 10327083, 30981249]

約数ペア:

[(1, 30981249), (3, 10327083), (9, 3442361), (13, 2383173), (39, 794391), (117, 264797), (169, 183321), (507, 61107), (1521, 20369)]